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Finding the Fourth Proportional to 99,413.75, 137,190.98 and 54,701.75

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Solution

The fourth proportional to 99,413.75, 137,190.98 and 54,701.75 is: 75,488.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,413.75 : 137,190.98 = 54,701.75 : x
  2. Step 2: Convert to fraction form
    99,413.75/137,190.98 = 54,701.75/x
  3. Step 3: Cross multiply
    99,413.75x = 137,190.98 × 54,701.75
  4. Step 4: Simplify right side
    99,413.75x = 7,504,586,690.22
  5. Step 5: Solve for x
    x = 7,504,586,690.22/99,413.75
  6. Step 6: Final answer
    x = 75,488.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.